Results 11 to 20 of about 298 (163)

Gynandromorphy in Eulaema atleticana Nemésio (Apidae, Euglossini)

open access: yesEntomoBrasilis, 2012
A gynandromorph specimen of Eulaema atleticana Nemésio, the first registered in Eulaema, is described. The E. atleticana gynandromorph was captured using an eucalyptol scent trap, in the Mata do Buraquinho Reserve, an Atlantic Forest fragment.
Maxwell Souza Silveira   +3 more
doaj   +7 more sources

Fauna de euglossina (Hymenoptera: Apidae) da Amazônia sul-ocidental, Acre, Brasil Fauna of euglossina (Hymenoptera: Apidae) from southwestern Amazonia, Acre, Brazil

open access: yesActa Amazonica, 2009
Machos de abelhas Euglossina foram coletados entre dezembro de 2005 e setembro de 2006 em 11 áreas florestais de diferentes tamanhos na região de Rio Branco, Acre, Amazônia Sul-Ocidental. As abelhas foram atraídas por 6 substâncias odoríferas e coletadas
Danielle Storck-Tonon   +2 more
doaj   +4 more sources

First Case of Gynandromorphism in the Orchid-Bee Eulaema meriana (Olivier) (Hymenoptera: Apidae)

open access: yesSociobiology, 2021
The discovery of the first case of gynandromorphism in Eulaema meriana (Olivier) is described and illustrated. A specimen from Los Ríos, western Ecuador, discovered in the Instituto Nacional de Biodiversidad (MECN) collection, exhibits mostly male ...
Alex Pazmiño-Palomino   +1 more
doaj   +3 more sources

Revisión de la morfología genital masculina de Eulaema (Hymenoptera: Apidae)

open access: yesRevista de Biología Tropical, 1998
Se presenta una revisión de la morfología de la cápsula genital del macho de las 15 especies de Eulaema y una caracterización del aparato copulador de cada una de ellas.
Rodulfo Ospina-Torres
doaj   +4 more sources

Eulaema chocoana, nueva especie de abeja euglosina de la Costa Pacífica Colombiana

open access: yesCaldasia, 1997
Description and comparative diagnosis are given for a new species of the Genus Eulaema. Eulaema chocoana is possibly an endemic species from the biogeographic Choco area.
Ospina Torres Rodulfo
doaj   +3 more sources

Una nueva especie de Eulaema (Hymenoptera: Apidae) del Chocó, Colombia

open access: yesCaldasia, 1997
Eulaema sorotie is described. It is a sibling species of El. meriana, apparently restricted to the Chocó area of Colombia and adjacent Ecuador, where it probably developed in a Pleistocene forest refugium.Se describe Eulaema sororia, una especie cercana ...
Dressler Robert L.   +1 more
doaj   +2 more sources

Floral Integration and Phenotypic Selection on Floral Traits of <i>Ipomoea cavalcantei</i> (Convolvulaceae), a Rare, Endemic, and Endangered Species to the Amazon Ironstone Outcrops. [PDF]

open access: yesEcol Evol
This paper analyzed the evolutionary potential of Ipomoea cavalcantei (an endemic species from the Amazon) by using floral integration and phenotypic selection analysis. The analyzed population presented floral integration in style length, probably due to selective pressures from pollinators on floral traits related to pollen deposition.
Valentin-Silva A   +6 more
europepmc   +2 more sources

Mountain colonization precedes shifts away from bee pollination in Melastomataceae. [PDF]

open access: yesNew Phytol
Summary Shifts among different groups of pollinators are central in the evolution of flowering plants, yet mechanisms underlying pollinator shifts remain unclear. Environment‐induced reduction in pollinator availability and hence efficiency may destabilize ancestral plant–pollinator interactions and trigger shifts to new, more efficient pollinators ...
Kopper C   +2 more
europepmc   +2 more sources

Euglossine Bees (Hymenoptera: Apidae) of Buriticupu, Amazonia of Maranhão, Brazil1 [PDF]

open access: yesActa Amazonica, 1999
Male euglossine bees attracted to cineole, vanillin, methyl salicylate, eugenol and benzyl benzoate, were collected from October 1995 to September 1996, twice a month, between 06.00 and 12.00 hours, at the Companhia Vale do Rio Doce Forest Reserve ...
Francinaldo Soares SILVA   +1 more
doaj   +1 more source

Plants, Pollinators and Pheromones: Promises and Lies of Semiochemicals. [PDF]

open access: yesPlant Cell Environ
ABSTRACT Pollination is traditionally regarded as a quintessential mutualism, yet many plants employ deceptive strategies to achieve reproductive success. Among the most intriguing is sexual deception, wherein flowers mimic the sex pheromones and visual signals of female insects to attract male pollinators—without providing any reward.
Slavković F, Bendahmane A.
europepmc   +2 more sources

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